Narrow Bridge Sign

Updated July 9, 2026

Narrow Bridge · MUTCD W5-2 · Warning sign

What the Narrow Bridge sign means

This yellow diamond warns that a bridge ahead is narrower than the approaching road — the pavement pinches in at the crossing. Two vehicles can still pass, but with little margin, so slow down, keep to your lane, and watch oncoming traffic closely. It is posted before older or rural bridges where the shoulders vanish and the lanes tighten. Do not try to pass on a narrow bridge, and if a large vehicle is coming the other way, be ready to slow further to give it enough room.

What to do when you see it

Slow down, hold your lane, and watch oncoming vehicles closely; do not pass on the bridge.

On the CA permit test

Narrow Bridge warns the road pinches in at the crossing — slow and stay centered in your lane.

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